EP3536111A1 - Noeud de réseau et dispositif de communication sans fil pour accès aléatoire dans des systèmes basés sur un faisceau - Google Patents

Noeud de réseau et dispositif de communication sans fil pour accès aléatoire dans des systèmes basés sur un faisceau

Info

Publication number
EP3536111A1
EP3536111A1 EP17866962.8A EP17866962A EP3536111A1 EP 3536111 A1 EP3536111 A1 EP 3536111A1 EP 17866962 A EP17866962 A EP 17866962A EP 3536111 A1 EP3536111 A1 EP 3536111A1
Authority
EP
European Patent Office
Prior art keywords
configuration
wireless communication
communication device
network node
indication
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP17866962.8A
Other languages
German (de)
English (en)
Other versions
EP3536111A4 (fr
EP3536111B1 (fr
Inventor
Niclas Wiberg
Håkan ANDERSSON
Qiang Zhang
Johan FURUSKOG
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Publication of EP3536111A1 publication Critical patent/EP3536111A1/fr
Publication of EP3536111A4 publication Critical patent/EP3536111A4/fr
Application granted granted Critical
Publication of EP3536111B1 publication Critical patent/EP3536111B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0617—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal for beam forming
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/001—Synchronization between nodes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/04—Scheduled access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0866—Non-scheduled access, e.g. ALOHA using a dedicated channel for access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/18—Management of setup rejection or failure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/28—Cell structures using beam steering
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/04—Error control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access

Definitions

  • Embodiments herein relate to a network node, a wireless communication device, and methods therein. In particular they relate to random access in a beam-based wireless communications network.
  • Wireless communication devices such as terminals are also known as e.g. User Equipments (UE), mobile terminals, wireless terminals and/or mobile stations. These terms will be used interchangeably hereafter.
  • UE User Equipments
  • Wireless communication devices are enabled to communicate wirelessly in a wireless or cellular communications network or a wireless communication system, sometimes also referred to as a cellular radio system or a cellular network.
  • the communication may be performed e.g. between two wireless communications devices, between a wireless communications device and a regular telephone and/or between a wireless communications device and a server via a Radio-Access Network (RAN) and possibly one or more core networks, comprised within the wireless communications network.
  • RAN Radio-Access Network
  • Access network nodes also referred to as access nodes, such as base stations, communicate over the air interface operating on radio frequencies with the wireless communication devices within range of the access network nodes.
  • the expression Downlink (DL) is used for the transmission path from the access network node to the wireless communication devices.
  • the expression Uplink (UL) is used for the transmission path in the opposite direction i.e. from the wireless communication devices to the access network node.
  • each access network node may support one or several communications technologies or radio interfaces also referred to as Radio-Access Technologies (RAT).
  • RAT Radio-Access Technologies
  • wireless communication technologies are New Radio (NR), Long-Term Evolution (LTE), Universal Mobile Telecommunications System (UMTS) and Global System for Mobile communications (GSM).
  • NR New Radio
  • LTE Long-Term Evolution
  • UMTS Universal Mobile Telecommunications System
  • GSM Global System for Mobile communications
  • 3GPP Third Generation Partnership Project
  • Transmit-side beamforming means that the transmitter may amplify a transmitted signal in a selected direction or directions while suppressing the transmitted signal in other directions.
  • a receiver may amplify signals from a selected direction (or directions) while suppressing unwanted signals from other directions.
  • Beamforming allows the signal to be stronger for an individual connection as compared to the case when no beamforming is employed. On the transmit side this is achieved by the concentration of the transmitted power in the desired direction(s), and on the receive side by the increased receiver sensitivity in the desired direction(s). This enhances throughput and coverage of the connection compared with if beamforming is not applied. It also allows reducing the interference from unwanted signals, thereby enabling several simultaneous transmissions over multiple individual connections using the same resources in the time-frequency grid, so-called multi-user Multiple-Input Multiple-Output (MIMO).
  • MIMO Multiple-Input Multiple-Output
  • beamforming is not restricted to the eNB. It may also be implemented as Rx- and Tx-side beamforming in the User Equipment (UE), further enhancing the UE
  • a UE When gaining access to a network, a UE starts by receiving downlink synchronization signals from the eNB and then synchronizing to these downlink synchronization signals. As an example, in LTE, the UE starts by detecting the Primary Synchronization Signal (PSS) after which the UE will have a subframe synchronization, OFDM symbol synchronization, and know the cell identity within the cell ID group. Having subframe synchronization may comprise that the UE has knowledge of when a subframe starts in DL transmissions. Having OFDM-symbol synchronization may comprise that the UE has knowledge of when an OFDM symbol starts in DL transmissions. Then the UE detects Secondary Synchronization Signal (SSS ), after which the UE is frame
  • PSS Primary Synchronization Signal
  • SSS Secondary Synchronization Signal
  • the UE may then be configured by receiving and detecting system information carried by a broadcast signal.
  • this broadcast information is carried by the Physical Broadcast Channel (PBCH) and by the Physical Downlink Shared Channel (PDSCH) carrying the Broadcast Control Channel (BCCH).
  • PBCH Physical Broadcast Channel
  • PDSCH Physical Downlink Shared Channel
  • BCCH Broadcast Control Channel
  • This broadcast information may relate to time and frequency allocations of the Physical Random-Access Channel (PRACH), such that the UE knows when and where it is allowed to transmit PRACH preambles.
  • PRACH preamble is a signalling sequence transmitted in the time/frequency resource designated for random access, which is defined in the applicable standard, and which the network constantly tries to detect.
  • Figure 2 illustrates a TDD system according to prior art, e.g.
  • the UE may transmit on the PRACH in subframe 5, which in this TDD system is a fixed allocation for UL transmissions.
  • the UE may be configured with timing information of when within a subframe it may transmit the preamble. This configuration may be implemented by broadcast information over a broadcast channel, or the UE may be preconfigured with the timing information of when within the subframe it may transmit the preamble. The UE then transmits the preamble on the PRACH.
  • the corresponding procedure, illustrated in Figure 3, in the eNB comprises transmitting downlink synchronization signals, transmitting the configuration as broadcast information over the broadcast channel, and receiving the preamble on the PRACH.
  • the random-access procedure is a key procedure.
  • a UE that wants to access the network initiates the random-access procedure by transmitting a preamble (Msg1) in the uplink on the PRACH.
  • An eNB receiving the preamble and detecting the random-access attempt will respond in the downlink by transmitting a random-access response (Msg2) on the Physical Downlink Shared Channel (PDSCH).
  • the random-access response carries an uplink scheduling grant for the UE to continue the procedure by transmitting a subsequent message in the uplink (Msg3) on the Physical Uplink Shared Channel (PUSCH) for terminal identification.
  • Msg1 preamble
  • PDSCH Physical Downlink Shared Channel
  • PUSCH Physical Uplink Shared Channel
  • a UE When a UE uses the PRACH, it transmits a so-called random-access preamble in a known time/frequency resource in the OFDM grid.
  • PRACH resources as specified for LTE Release 8 as defined in 3GPP TS 36.211 v.1 1.3.0, is given in Figure 5.
  • a PRACH preamble consists of one or two sequences, each of length 24 576 time-domain samples.
  • the preambles have a cyclic prefix, denoted CP in Figure 5, of length between 3 168 and 21 024 samples for format 0 to 3.
  • PRACH resources comprises of dedicated resources in the time-frequency grid where the UEs may be allowed to transmit a random-access preamble.
  • a UE is typically configured with a PRACH configuration which specifies which PRACH resources that are available to the UE. This may also include which Random- Access (RA) preambles that are available to a given UE.
  • RA Random- Access
  • a given UE may have been assigned a unique preamble, in which case the random-access transmission will be contention-free.
  • several UEs may use the same preamble for transmission in the same RA-resource, in which case there is a contention- situation that must be resolved by the network.
  • Rx-beamforming i.e. receiver beamforming
  • PRACH resources there is an additional aspect to the PRACH resources, namely, the availability of Rx-beams pointing in a suitable direction.
  • the eNB will not know in advance from which direction the preamble transmitted from the UE will arrive.
  • all possible Rx-beams must be utilized.
  • the number of available Rx-beams in a given transmission-time interval (TTI), which typically is a subframe or a single OFDM-symbol may be restricted. This is most commonly the case in a system that employs analog (time-domain) beamforming, but even in a system using digital beamforming a lack of processing chains may restrict the number of available Rx- beams.
  • TTI transmission-time interval
  • the eNB may scan in all directions over time.
  • the drawback of this approach is that more PRACH resources have to be reserved compared to the case of omnidirectional PRACH reception. This also has a delay-aspect since a UE transmitting a PRACH-preamble must do this until the eNB employs an Rx-beam that points in a suitable direction, otherwise the random-access attempt may not be received at the eNB.
  • the reception of the PRACH signal may provide an initial estimate of the direction of, or suitable beam for, the UE from the network perspective. Such an estimate of the direction is necessary to obtain beamforming gains described above. The estimate may then be maintained and improved using beam tracking, as described below.
  • the PRACH configurations are conveyed to a wireless communications device, such as a UE, using some broadcast mechanism.
  • the amount of resources set aside for the PRACH is a trade-off between how much resources are removed from the other uplink channels, most notably the
  • More PRACH resources mean that random-access opportunities occur more often at the cost of a lower maximum capacity of the PUSCH.
  • Embodiments herein may for example improve the random-access procedure by reducing the delay associated with Tx/Rx beam tracking, e.g. in a network node such as an eNB, during the random-access procedure.
  • a network node such as an eNB
  • both the UE and the eNB notice very quickly if a BTP loses a useful Tx/Rx-pair, or in other words, if the BTP is no longer working properly.
  • a method performed by a wireless communication device for performing random access.
  • the wireless communication device is configured with a first Random-Access (RA) configuration.
  • the wireless communication device obtains an indication of a failure of a beam-tracking process.
  • the wireless communication device adapts the RA configuration of the wireless communication device based on the obtained indication, wherein the adapting comprises switching from the first RA configuration to a second RA configuration having more frequently occurring RA-resources than the first RA configuration.
  • the wireless communication device transmits a RA message with a RA resource to a network node.
  • the RA resource is based on the adapted RA configuration.
  • a method performed by a serving network node for performing random access is configured with a first Random-Access (RA) configuration.
  • RA Random-Access
  • the network node obtains an indication of a failure of a beam-tracking process.
  • the network node adapts the random-access configuration of the wireless communication device based on the obtained indication, wherein the adapting comprises switching from the first RA configuration to a second RA configuration having more frequently occurring
  • the network node receives a RA message with a RA resource from a wireless communication device.
  • the RA resource is based on the adapted RA configuration.
  • the wireless communication device for performing a method for random access.
  • the wireless communication device is configured with a first Random-Access (RA) configuration.
  • the wireless communication device is further configured to obtain an indication of a failure of a beam-tracking process.
  • the wireless communication device is further configured to adapt the RA configuration of the wireless communication device based on the obtained indication, wherein the adapting comprises switching from the first RA configuration to a second RA configuration having more frequently occurring RA-resources than the first RA configuration.
  • the wireless communication device is further configured to transmit a RA message with a RA resource to a network node.
  • the RA resource is based on the adapted RA configuration.
  • a serving network node for performing a method for random access.
  • the network node is serving a wireless communication device and is configured with a first Random-Access (RA) configuration.
  • the network node is configured to obtain an indication of a failure of a beam-tracking process.
  • the network node is further configured to adapt the RA configuration of the wireless communication device based on the obtained indication, wherein the adapting comprises switching from the first RA configuration to a second RA configuration having more frequently occurring RA resources than the first RA configuration.
  • the network node is further configured to receive a RA message from a wireless communication device.
  • the RA message comprises a RA resource based on the adapted RA configuration.
  • a wireless communication device for performing a method for random access.
  • the wireless device comprises a processor and a memory.
  • the memory contains instructions executable by said processor, whereby said wireless communication device is operative to obtain an indication of a failure of a beam-tracking process.
  • the memory contains instructions executable by said processor, whereby said wireless communication device is operative to adapt a RA configuration of the wireless communication device based on the obtained indication, wherein the adapting comprises switching from a first RA configuration to a second RA configuration having more frequently occurring RA-resources than the first RA configuration.
  • the memory further contains instructions executable by said processor, whereby said wireless communication device is operative to transmit a RA message with a RA resource to a network node.
  • the RA resource is based on the adapted RA configuration.
  • a network node for performing a method for random access.
  • the network node comprises a processor and a memory.
  • the memory contains instructions executable by the processor whereby said network node is operative to obtain an indication of a failure of a beam-tracking process.
  • the memory contains instructions executable by the processor whereby said network node is operative to adapt the RA configuration of the wireless communication device based on the obtained indication, wherein the adapting comprises switching from the first RA configuration to a second RA configuration having more frequently occurring RA resources than the first RA configuration.
  • the memory contains instructions executable by the processor whereby said network node is further operative to receive a RA message with a RA resource from a wireless communication device.
  • the RA resource is based on the adapted RA configuration.
  • the wireless communication device for performing a method for random access.
  • the wireless communication device comprises a detecting module configured to obtain an indication of a failure of a beam-tracking process.
  • the wireless communication device comprises an adapting module configured to adapt the RA configuration of the wireless communication device based on the obtained indication, wherein the adapting comprises switching from the first RA configuration to a second RA configuration having more frequently occurring RA resources than the first RA configuration.
  • the wireless communication device further comprises a transmitting module configured to transmit a RA message with a RA resource to a network node.
  • the RA resource is based on the adapted RA configuration.
  • a network node for performing a method for random access.
  • the network node comprises a detecting module configured to obtain an indication of a failure of a beam-tracking process.
  • the network node comprises an adapting module configured to adapt the RA configuration of the wireless communication device based on the obtained indication, wherein the adapting comprises switching from the first RA configuration to a second RA configuration having more frequently occurring RA-resources than the first RA configuration.
  • the network node further comprises a receiving module configured to receive a RA message with a RA resource from a wireless communication device. The RA resource is based on the adapted RA configuration.
  • the wireless communication device detects the failure of the beam-tracking process by receiving a control message from the wireless communications network, e.g. from a serving network node, such as the first network node.
  • the communication device adapts a configuration of random-access resources for the wireless communication device. Since the wireless communication device transmits the random-access message to the network node with the random-access resource based on the adapted configuration of random-access resources the time for the random-access procedure will be reduced since the average time before a random-access resource is available is shortened, and the time before a receive-beam scanning in the network node has cycled through all available beams is decreased.
  • the use of beam-based transmission and reception may be a cornerstone.
  • Some mechanisms may be utilized that may track Tx/Rx beam-pairs that are suitable for data transfer. What kind of reference symbols that are utilized for this, or how the mechanisms operate, is outside the scope of embodiments herein.
  • Such a beam-tracking procedure presents a new failure mode of the UE/eNB connection that is not present in a non-beamforming system. That is, the UE is still within a geographical area covered by the eNB and the UE has sufficient transmit power to reach the eNB, but the necessary information about suitable beams is not present, and hence, the connection fails.
  • the Rx-beam direction must coincide with the direction towards the UE transmitting the preamble in order for the RA-transmission to have a reasonable chance of being received.
  • the delay before the RA-transmission is received may be substantial.
  • the sweeping period depends on the number of Rx- beams that may be used for RA-reception in each TTI as well as how frequently RA- resources occur over time.
  • Embodiments herein may be implemented in one or more wireless communications networks.
  • Figure 6 depicts parts of such a wireless communications network 601.
  • the wireless communications network 601 may for example be a 5G/New Radio (NR), any 3GPP or any cellular wireless communications network or system that makes use of beams.
  • 5G/NR will hereafter be used to exemplify the embodiments although the embodiments are thus not limited thereto.
  • the wireless communications network 601 comprises a plurality of base stations and/or other network nodes. More specifically, the wireless communications network 601 comprises a first network node 611 , such as an access network node.
  • the wireless communications network 601 may further comprise a second network node 612.
  • the second network node 612 may for example be a neighbour network node, such as a neighbour access network node, to the first network node 611.
  • the term "network node" may correspond to any type of radio network node or any network node, which communicates with at least a radio network node.
  • the first network node 61 1 may be a base station, such as an eNB.
  • the base station may also be referred to as a NodeB, an evolved Node B (eNB, eNode B), a base transceiver station (BTS), Access Point (AP) Base Station, Wi-Fi AP, base station router, or any other network unit capable of communicating with a wireless communication device within a cell served by the base station depending e.g. on the radio-access technology and
  • eNB evolved Node B
  • BTS base transceiver station
  • AP Access Point
  • Wi-Fi AP Wi-Fi AP
  • base station router or any other network unit capable of communicating with a wireless communication device within a cell served by the base station depending e.g. on the radio-access technology and
  • the first network node 61 1 and/or the second network node 612 may also each be an RNC in an UMTS system.
  • the first network node 611 serves wireless communications devices, such as a wireless communications device 615.
  • the wireless communications device 615 may further be e.g. a mobile terminal or a wireless terminal, a mobile phone, a computer such as e.g. a laptop, a Personal Digital Assistants (PDAs) or a tablet computer, sometimes referred to as a surf plate, with wireless capability, target device, device-to-device UE, Machine-Type Communication UE or UE capable of machine-to-machine communication, iPad, mobile terminals, smart phone, Laptop-Embedded Equipment (LEE), Laptop-Mounted Equipment (LME), USB dongles, etc. or any other radio network units capable to communicate over a radio link in a wireless communications network.
  • PDAs Personal Digital Assistants
  • User Equipment used in this disclosure also covers other wireless devices such as Machine-to-machine (M2M) devices, even though they are not operated by any user.
  • M2M Machine-to-machine
  • Network nodes such as base stations and W-Fi AP, communicate over the air or radio interface operating on radio frequencies with wireless communication devices within range of the network nodes.
  • the wireless communication devices transmit data over the radio interface to network nodes, such base stations and W-Fi AP, in UL transmissions, and network nodes, such as W-Fi AP and base stations, transmit data over an air or radio interface to the wireless communication devices in DL transmissions.
  • the first network node 611 may communicate with the wireless communications device 615 over a radio link, such as a first radio link, associated with the first network node 611.
  • the first radio link may be associated with the first network node 611 since it is a radio link between the first network node 61 1 and the wireless communications device 615. This may also be referred to as the first network node 61 1 being a serving network node.
  • the first radio link may be provided by a first beam 621.
  • the first beam 621 may comprise a first Tx/Rx beam-pair.
  • the first network node 61 1 may communicate with the wireless communications device 615 over further radio links.
  • the second network node 612 may communicate with the wireless communications device 615 over a second radio link, associated with the second network node 612.
  • the first radio link may be provided by a second beam 632.
  • the second network node 612 may communicate with the wireless communications device 615 over further radio links.
  • the wireless communications network 601 may further comprise cells serving wireless communication devices.
  • a cell is a geographical area where radio coverage is provided by network node equipment such as Wi-Fi AP equipment, base station equipment at a base station site or at remote locations in Remote-Radio Units (RRU).
  • the first network node 61 1 may be an example of such network node equipment.
  • Radio beams may have a similar function as the cells described above.
  • the first network node 611 may communicate with the second network node 612, e.g. over a first interface 641 , such as an X2-interface.
  • a first interface 641 such as an X2-interface.
  • Tx/Rx beam-pairs A UE and/or an eNB may have one or several such pairs. In the case of UL/DL reciprocity, it may be the same pair that is used bi-directionally for both UL and DL. In the case where there is no reciprocity, the system must track separate Tx/Rx-pairs for UL and DL. There may also be Tx/Rx-pairs that are not actively used for data transmission or signaling, but simply monitored and tracked for future use in a hand-over situation.
  • Each Tx/Rx-pair is maintained using a so-called beam-tracking process (BTP).
  • the beam-tracking process may also be referred to as a Beam-pair link (BPL).
  • BTP Beam-pair link
  • BPL Beam-pair link
  • the following embodiments are related to the wireless communication device 615.
  • the wireless communication device 615 embodiments relate to Figures 7 and 11.
  • the wireless communication device 615 may:
  • the failure may involve losing a connection, such as the first radio link, towards the first network node 611.
  • a connection such as the first radio link
  • the first network node 611 and the communication device 615 may not be able to track a first Tx/Rx beam- pair the connection towards the wireless communication device 615 over the first radio link may be lost.
  • it may be the Rx-beam of the UE and/or the Tx-beam of the eNB that fails.
  • the eNB may track the link consisting of the Tx/Rx- pair by adjusting both the Tx-beam and/or the Rx-beam.
  • the wireless communication device 615 detects the failure of the beam-tracking process by receiving a control message from the wireless communications network, e.g. from a serving network node, such as a first network node.
  • the control message may serve as an indication of the failure of the UL beam-tracking process. For example, this may happen when the BTPs for UL and DL are separate and the BTP for UL has failed but the BTP associated with the DL is still operational.
  • the re-establishment of the connection may be of highest priority. This may lead to either continuing to use another already active BTP or switching to one or more passive BTPs.
  • the wireless communication device 615 may perform a random-access (RA) procedure. Since both the wireless communication device 615 and the first network node 611 know that the BTP(s) failed, both sides also know that an RA-procedure may be imminent.
  • RA random-access
  • This action may be performed by means such as a detecting module 1110 in the wireless communication device 615.
  • the detecting module 11 10 may be implemented by a processor 1180 in the wireless communication device 615.
  • adapt 702 its random-access configuration, e.g. a configuration of random-access resources for the wireless communication device 615.
  • the communication device 615 adapts the random-access configuration based on the detected failure of the beam-tracking process.
  • both the wireless communication device 615 and the first network node 611 such as the eNB, automatically switch to, or replace, a pre- configured PRACH-configuration with a larger and/or denser PRACH- configuration, e.g. a PRACH-configuration with more frequently occurring RA- resources than the pre-configured PRACH-configuration or default PRACH- configuration, upon detection of BTP-failure(s).
  • a pre- configured PRACH-configuration with a larger and/or denser PRACH- configuration e.g. a PRACH-configuration with more frequently occurring RA- resources than the pre-configured PRACH-configuration or default PRACH- configuration, upon detection of BTP-failure(s).
  • the default PRACH configuration is a PRACH-configuration that is normally utilized in the wireless communications network 601. It is typically broadcast in some kind of broadcast message that reaches all wireless devices as soon as they have acquired synchronization with a base station in the wireless communications network 601.
  • the larger and/or denser PRACH-configuration may have the default PRACH-configuration as a proper subset. In this way any other wireless communication devices not involved in the BTP-failure triggering the larger PRACH-configuration will still be able to perform RA without being affected by the enlarged set.
  • This action may be performed by means such as an adapting module 1120 in the wireless communication device 615.
  • the adapting module 1 120 may be implemented by the processor 1 180 in the wireless communication device 615. • transmit 703 a random-access message to a network node, such as the first network node 61 1 , or the second network node 612, with a random-access resource based on the adapted configuration of random-access resources.
  • This action may be performed by means such as a transmitting module 1130 in the wireless communication device 615.
  • the transmitting module 1130 may be implemented by the processor 1180 in the wireless communication device 615.
  • Embodiments herein may be performed in the wireless communication device 615.
  • the wireless communication device 615 may comprise the modules mentioned above and depicted in Figure 10.
  • the first network node 61 1 embodiments relate to Figures 8 and 12.
  • the first network node 61 1 may:
  • the first network node 61 1 may obtain 801 an indication of the failure of the beam- tracking process.
  • the failure may involve losing a connection, such as the first radio link, towards the wireless communication device 615.
  • the first network node 611 may not be able to track the first Tx/Rx beam-pair the connection towards the wireless communication device 615 over the first radio link may be lost.
  • This action may be performed by means such as a detecting module 1210 in the first network node 61 1.
  • the detecting module 1210 may be implemented by a processor 1280 in the first network node 61 1.
  • the first network node 611 adapts the random-access configuration based on the detected failure of the beam-tracking process.
  • the first network node 61 1 automatically switches to, or replaces, a pre-configured PRACH-configuration with a larger and/or denser PRACH-configuration, e.g. a PRACH-configuration with more frequently occurring RA-resources than the pre-configured PRACH-configuration or default PRACH- configuration, upon detection of BTP-failure(s).
  • a pre-configured PRACH-configuration with a larger and/or denser PRACH-configuration e.g. a PRACH-configuration with more frequently occurring RA-resources than the pre-configured PRACH-configuration or default PRACH- configuration
  • the larger and/or denser PRACH-configuration may have the default PRACH-configuration as a proper subset. In this way any other wireless communication devices not involved in the BTP-failure triggering the larger PRACH-configuration will still be able to perform RA without being affected by the enlarged set.
  • This action may be performed by means such as an adapting module 1220 in the first network node 61 1.
  • the adapting module 1220 may be implemented by the processor 1280 in the first network node 611.
  • This action may be performed by means such as a receiving module 1230 in the first network node 61 1.
  • the receiving module 1230 may be implemented by the processor 1280 in the first network node 611.
  • Embodiments herein may be performed in the first network node 61 1.
  • the first network node 61 1 may comprise the modules mentioned above and depicted in Figure 1 1.
  • the wireless communication device 615 will be exemplified with a UE and the first network node will be exemplified with an eNB.
  • the PRACH-configuration of the first embodiment is
  • the enlarged PRACH-set is available for a limited time during which the re-establishment of the BTP is initiated and then the system, i.e. the wireless communication device 615 and the first network node 611 , is back using the default set.
  • a technical advantage is that for the limited time the enlarged PRACH-set is available without any signaling necessary between the UE and the eNB.
  • the PRACH-configuration of the first embodiment is used only until the UE has re-establish a BTP or until a timer has expired, whichever comes first. The default configuration is then used thereafter.
  • These embodiments may have the same advantages as the previous embodiments with the additional advantage that the UE and the eNB know when the BTP has been re-established, and hence, may revert to the default PRACH-set sooner, thus not wasting unnecessary ULresources on extra PRACH-resources that will not be needed.
  • a UE using a latency or delay-critical connection is configured with a PRACH-configuration with more frequently occurring RA- resources. That is, in these embodiments the method is not applied for all UEs but for certain UEs that fulfill this criterion.
  • a latency or delay-critical connection may be a connection used by a UE belonging to a specific service class with stricter requirements for transmission latency than typically used and applicable to other service classes.
  • the UE of the fifth embodiment is a high-speed mobility UE. In some embodiments, the UE of the fifth embodiment is a so-called "ultra-reliable low-latency" UE, which means that it belongs to a specific service class with stricter requirements for transmission latency and/or transmission reliability than typically used and applicable to other service classes.
  • the RA procedure is triggered by the network, such as the first network node 611 , using downlink control signaling, e.g., when UL
  • the BTPs for UL and DL may be separate. Then the UE may detect that the BTP has failed by receiving an indication of the failure, e.g. in a control message, from the network, e.g. from the serving eNB, such as the first network node 61 1.
  • the eNB schedules the UE in UL and the UE transmits. However, the UL is no longer working due to that the BTP for the UL has failed. The eNB understands and/or detects this and sends the control message to the UE using the still functional DL BTP, which is the way the UE understands and/or detects that the UL BTP has failed. Then the UE may enlarge the PRACH-configuration and start the RA-procedure.
  • Examples of DL control signaling may comprise scheduling of the RA-procedure using the (e)PDCCH or any kind of trigger in a DCI-message (grant).
  • the RA- procedure may also be triggered at the MAC-level using a MAC Control Element.
  • the serving node such as the first network node 611 , informs the neighbor nodes, such as the second network node 612, to increase the PRACH-resource density when BTP-failure is detected.
  • the UE may lose connection to the serving node and detect the neighbor node as the strongest node during the re-establishment.
  • the first network node 611 may also adapt its own PRACH-resource density.
  • the BTP-failure may be due to a temporary loss of connection towards the serving eNB, and the re-establishment of the BTP may very well be towards the serving eNB again.
  • the eNB may have velocity-information about the UE that makes it unnecessary to enlarge the
  • the adapted PRACH configuration depends on the load of the wireless communications network 601 , e.g. a system load.
  • the UE may read a system load indication from a system information.
  • all subframes except fixed downlink subframes may be configured as
  • PRACH resources In a system with high load, only part of the subframes may be configured as the PRACH resources.
  • the details of the denser PRACH configuration is
  • the configuration may depend on the current system load or other input conditions.
  • FIG. 9 is a diagram that illustrates some exemplary embodiments herein.
  • the wireless communication device 615 detects 901 a BTP failure, which may also be referred to as a BPL failure.
  • the first network node 61 1 also detects 901 b the same BTP failure.
  • the wireless communication device 615 adapts 902a its PRACH-configuration, or in other words its RA-configuration.
  • the first network node 611 may also adapt 902b the PRACH- configuration of the wireless communication device 615.
  • the first network node 61 1 may provide, e.g. by transmitting, 903 an indication to increase the PRACH configuration or PRACH resources for the wireless communication device 615 to a neighbour network node, such as the second network node 612.
  • the second network node 612 may then adapt 904 the PRACH-configuration of the wireless communication device 615.
  • the wireless communication device 615 transmits 905a, 905b a RA preamble which may be received by network node.
  • the wireless communication device 615 may transmit 905a the RA preamble which is received by the first network node 61 1.
  • the wireless communication device 615 may also transmit 905b the RA preamble which is received by the second network node 612.
  • Which network node that receives the RA preamble may depend on e.g. the mobility of the wireless communication device 615, e.g. depending on the velocity of the wireless communication device 615.
  • the UE may transmit the RA preamble "in the blind" and hoping that at least one network node will hear the transmission.
  • the network nodes It's up to the network nodes to sweep the Rx-beams in a manner so that all directions are (eventually) covered. It is also up to the network nodes, such as the first network node 611 , to decide which neighbor nodes, such as the second network node 612, should adapt, which may also be referred to as listen to the enlarged PRACH set. This is only meaningful to do in network nodes, such as eNBs that have a reasonable probability of hearing the transmission.
  • Figure 10 The wordings "larger PRACH-configuration" and “denser PRACH-configuration " and "more frequently occurring RA-resources” may all mean exactly the same thing as may be illustrated with Figure 10.
  • Figure 10 At the bottom of Figure 10 is an exemplary default PRACH-configuration consisting of reserved resources (indicated as black rectangles) in both time and frequency, in some of the subframes.
  • the upper part of the figure shows an exemplary enlarged PRACH-configuration with additional resources in both time and frequency added.
  • the additional resources are marked as white rectangles. Note that the enlarged set comprises the combination of the default set and the additional resources.
  • “Larger” may mean that there are more PRACH opportunities in the set. “Denser” may mean that the PRACH opportunities occur more densely in a time and/or a frequency domain. "Frequently” as in “more often” in any available dimension.
  • the enlargement in the time domain may be both in more PRACH-resources within a given subframe (SF) as well as adding resources in SFs that are not utilized at all in the default configuration.
  • the extended set contains the default configuration as a proper subset.
  • the number of PRACH resources may be adapted to fit the current traffic situation in the network. For example:
  • the number of PRACH resources may be made small to maximize the number of time/frequency resources available for data transmission
  • the number of PRACH resources available to those UEs may be increased in order to decrease the average latency caused by the RA-procedure.
  • Intermittent traffic may mean that the traffic is "on” and “off” on such a time-scale that the beam tracking is not maintained continuously, but still likely to transmit more frequently than other UEs that are idle in the service area. Thus, these UEs are not transmitting "all the time” and thus maintaining
  • Tx/Rx beam-pair(s) are transmitting quite seldom but still present, o
  • the number of PRACH resources may temporarily be increased significantly assuming that the UE will try to re-establish the connection using a RA- procedure.
  • an advantage may be improved re-establishment in the sense of latency, since available PRACH-resources will (on average) be present quicker.
  • Fig. 11 is a block diagram depicting the wireless communication device 615 for performing a method for random access.
  • the wireless communication device 615 may comprise a processor 1180 configured to perform the method as described herein, as performed by the wireless communication device 615. Dashed lines of a box in Figure 11 indicate that this box is not mandatory and relates to some embodiments only.
  • the wireless communication device 615 is configured to obtain an indication of a failure of a beam-tracking process.
  • the wireless communication device 615 may comprise an obtaining module 1140, a detecting module 1110 and/or the processor 1180 being configured to obtain an indication of a failure of a beam-tracking process.
  • the wireless communication device 615 is further configured to adapt the RA configuration of the wireless communication device 615, based on the obtained indication.
  • the adapting may comprise switching from the first RA configuration to a second RA configuration having more frequently occurring RA resources than the first RA
  • This may also be referred to as the second RA configuration having denser RA resources than the first RA configuration.
  • the wireless communication device 615 may comprise an adapting module 1120 and/or the processor 1180 being configured to adapt the RA configuration of the wireless communication device 615 based on the obtained indication, wherein the adapting comprises switching from the first RA configuration to a second RA configuration having more frequently occurring RA resources than the first RA
  • the wireless communication device 615 is further configured to transmit, to a network node (611 , 612), a RA message using a RA resource, which RA resource is based on the adapted RA configuration.
  • the wireless communication device 615 may comprise a transmitting module 1 130 and/or the processor 1 180 being configured to transmit, to a network node 61 1 , 612, a RA message using a RA resource, which RA resource is based on the adapted RA configuration.
  • the wireless communication device 615 may further be configured to obtain the indication by detecting a loss of a connection towards the network node 61 1.
  • the wireless communication device 615 may comprise the processor 1 180, the obtaining module 1140 or the detecting module 1110 further being configured to obtain the indication by detecting a loss of a connection towards the network node 61 1.
  • the wireless communication device 615 may further be configured to obtain the indication by receiving a control message from the network node 611 , which control message indicates a failure of an Uplink, UL, beam-tracking process.
  • the wireless communication device 615 may comprise a receiving module 1150 or the processor 1 180 or the obtaining module 1 140 or the detecting module 11 10 further being configured to obtain the indication by receiving a control message from the network node 61 1 , which control message indicates a failure of an Uplink (UL) beam-tracking process.
  • UL Uplink
  • the wireless communication device 615 may further be configured to restore the first RA configuration when a limited time has expired.
  • the wireless communication device 615 may comprise the processor 1 180 or the adapting module 1120 further being configured to restore the first RA configuration when a limited time has expired.
  • the wireless communication device 615 may further be configured to restore the first RA configuration when the wireless communication device 615 has re-established a Beam-Tracking Process, BTP.
  • the wireless communication device 615 may comprise the processor 1180 or the adapting module 1 120 further being configured to restore the first RA configuration when the wireless communication device 615 has re-established a Beam-Tracking Process (BTP) which may also be referred to as a Beam-pair link (BPL).
  • BTP Beam-Tracking Process
  • BPL Beam-pair link
  • Fig. 12 is a block diagram depicting a serving network node 61 1 , for performing a method for random access.
  • the network node 611 is serving a wireless communication device 615 and is configured with a first Random Access (RA) configuration. Dashed lines of a box in Figure 12 indicate that this box is not mandatory and relates to some embodiments only.
  • RA Random Access
  • the network node 611 is configured to obtain an indication of a failure of a beam- tracking process.
  • the network node 611 may comprise a detecting module
  • an obtaining module 1240 being configured to obtain an indication of a failure of a beam-tracking process.
  • the network node 61 1 is further configured to adapt the RA configuration of the wireless communication device 615 based on the obtained indication.
  • the adapting may comprise switching from the first RA configuration to a second RA configuration having more frequently occurring RA resources than the first RA configuration.
  • the network node 611 may comprise an adapting module
  • the adapting may comprise switching from the first RA configuration to a second RA configuration having more frequently occurring RA resources than the first RA configuration.
  • the network node 61 1 is further configured to receive, from a wireless
  • the network node 611 may comprise a receiving module 1230 or the processor 1280 being configured to receive, from a wireless communication device, a RA message with a RA resource, which RA resource is based on the adapted RA configuration.
  • the network node 611 may further be configured to transmit, to the wireless communication device 615, a control message, which control message indicates a failure of a beam-tracking process.
  • the network node 611 may comprise a transmitting module 1250 or the processor 1280 being configured to transmit, to the wireless communication device 615, the control message indicating a failure of a beam-tracking process.
  • the network node 61 1 may further be configured to obtain the indication by detecting a loss of a connection towards the network node 611.
  • the network node 611 may comprise the detecting module 1210 or the obtaining module 1240 further being configured to obtain the indication by detecting a loss of a connection towards the network node 611.
  • the network node 611 may further be configured to restore the first RA configuration when a limited time has expired.
  • the network node 611 may comprise the adapting module 1220 or the processor 1280 further being configured to restore the first RA configuration when a limited time has expired.
  • the network node 61 1 may further be configured to restore the first RA configuration when a Beam-Tracking Process (BTP) has been re-established.
  • BTP Beam-Tracking Process
  • the network node 611 may comprise the adapting module 1220 or the processor 1280 further being configured to restore the first RA configuration when a Beam-Tracking Process, BTP, has been re-established.
  • BTP Beam-Tracking Process
  • the network node 611 may further be configured to provide, to a neighboring network node 612, an indication to increase the RA resource density.
  • the network node 611 may comprise a transmitting module 1250 or the processor 1280 further being configured to provide, to a neighboring network node 612, an indication to increase the RA resource density.
  • the embodiments herein may be implemented through one or more processors, such as the processor 1180 in the wireless communication device 615 depicted in Figure 1 1 , and the processor 980 in the first network node 61 1 depicted in Figure 12 together with computer program code for performing the functions and actions of the embodiments herein.
  • the program code mentioned above may also be provided as a computer program product 1191 , 1291 for instance in the form of a data carrier carrying computer program code 1192, 1292 for performing the embodiments herein when being loaded into the first network node 61 1 and the wireless communication device 615.
  • a data carrier carrying computer program code 1192, 1292 for performing the embodiments herein when being loaded into the first network node 61 1 and the wireless communication device 615.
  • One such carrier may be in the form of a CD ROM disc. It is however feasible with other data carriers such as a memory stick.
  • the computer program code may furthermore be provided as pure program code on a server and downloaded to the first network node 61 1 and the wireless communication device 615.
  • the methods according to the embodiments described herein for the first network node 61 1 and the wireless communication device 615 may be implemented by means of a computer program product, comprising instructions, i.e., software code portions, which, when executed on at least one processor, cause the at least one processor to carry out the actions described herein, as performed by the first network node 61 1 and the wireless communication device 615.
  • the computer program product may be stored on a computer-readable storage medium.
  • the computer-readable storage medium, having stored there on the computer program may comprise the instructions which, when executed on at least one processor, cause the at least one processor to carry out the actions described herein, as performed by the first network node 61 1 and the wireless communication device 615.
  • the computer-readable storage medium may be a non-transitory computer-readable storage medium.
  • the wireless communication device 615 and the first network node 611 may further each comprise a memory 1190, 1290, comprising one or more memory units.
  • the memory 1 190, 1290 is arranged to be used to store obtained information such as number of repetitions of a radio block, if the burst mapping is legacy, compact or combined and applications etc. to perform the methods herein when being executed in the first network node 61 1 , and the wireless communication device 615.
  • the different modules described above may refer to a combination of analog and digital circuits, and/or one or more processors configured with software and/or firmware, e.g.
  • processors such as the processors in the first network node 61 1 and the wireless communication device 615 perform as described above.
  • processors such as the processors in the first network node 61 1 and the wireless communication device 615 perform as described above.
  • processors may be included in a single application-specific integrated circuitry (ASIC), or several processors and various digital hardware may be distributed among several separate components, whether individually packaged or assembled into a system-on-a-chip (SoC).
  • SoC system-on-a-chip
  • several of the functional elements of the processing means discussed may be provided through the use of dedicated hardware, while others are provided with hardware for executing software, in association with the appropriate software or firmware.
  • processor or “controller” as used herein does not exclusively refer to hardware capable of executing software and may implicitly include, without limitation, digital signal processor (DSP) hardware, read-only memory (ROM) for storing software, random-access memory for storing software and/or program or application data, and nonvolatile memory. Other hardware, conventional and/or custom, may also be included. Designers of network nodes will appreciate the cost, performance, and maintenance trade-offs inherent in these design choices.
  • eNB enhanced Node B i.e., Base Station

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Selon certains modes de réalisation, la présente invention concerne un procédé mis en oeuvre par un dispositif de communication sans fil (615), pour effectuer un accès aléatoire. Le dispositif de communication sans fil (615) est configuré avec une première configuration d'accès aléatoire (RA). Le procédé consiste à obtenir une indication d'une défaillance d'un processus de suivi de faisceau. Le procédé comprend en outre l'adaptation de la configuration RA du dispositif de communication sans fil (615) sur la base de l'indication obtenue, l'adaptation comprenant la commutation de la première configuration RA à une seconde configuration RA ayant des ressources RA plus fréquentes que la première configuration RA. Le procédé consiste en outre à transmettre, à un nœud de réseau (611, 612), un message RA à l'aide d'une ressource RA, laquelle ressource RA est basée sur la configuration RA adaptée. Selon certains modes de réalisation, la présente invention concerne en outre un procédé mis en oeuvre par un nœud de réseau de desserte (611), ainsi qu'un dispositif de communication sans fil (615) et un nœud de réseau de desserte (611) pour mettre en oeuvre les procédés.
EP17866962.8A 2016-11-02 2017-10-30 Noeud de réseau et dispositif de communication sans fil pour accès aléatoire dans des systèmes basés sur un faisceau Active EP3536111B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201662416190P 2016-11-02 2016-11-02
PCT/SE2017/051061 WO2018084775A1 (fr) 2016-11-02 2017-10-30 Nœud de réseau et dispositif de communication sans fil pour accès aléatoire dans des systèmes basés sur un faisceau

Publications (3)

Publication Number Publication Date
EP3536111A1 true EP3536111A1 (fr) 2019-09-11
EP3536111A4 EP3536111A4 (fr) 2019-11-06
EP3536111B1 EP3536111B1 (fr) 2022-03-23

Family

ID=62076878

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17866962.8A Active EP3536111B1 (fr) 2016-11-02 2017-10-30 Noeud de réseau et dispositif de communication sans fil pour accès aléatoire dans des systèmes basés sur un faisceau

Country Status (4)

Country Link
US (1) US10848217B2 (fr)
EP (1) EP3536111B1 (fr)
CN (1) CN109906666B (fr)
WO (1) WO2018084775A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20230041089A (ko) 2016-11-04 2023-03-23 텔레폰악티에볼라겟엘엠에릭슨(펍) 빔 장애 처리 방법 및 장치
CN109151869B (zh) * 2017-06-19 2021-12-14 维沃移动通信有限公司 一种随机接入资源的配置方法、终端及网络设备
US11601983B2 (en) * 2021-03-03 2023-03-07 Qualcomm Incorporated Per-sample repetition of a random access preamble

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2813023A1 (fr) * 2012-02-10 2014-12-17 Nokia Solutions and Networks Oy Agrégation de porteuses inter-sites
EP2826288B1 (fr) * 2012-03-16 2018-12-05 Interdigital Patent Holdings, Inc. Procédures d'accès aléatoire dans des systèmes de communication sans fil
WO2014017869A1 (fr) * 2012-07-27 2014-01-30 엘지전자 주식회사 Procédé et appareil de transfert entre cellules
EP3075089B1 (fr) * 2013-11-27 2021-09-08 Telefonaktiebolaget LM Ericsson (publ) Émission et détection de signaux de synchronisation et d'un message d'information associé
KR102078569B1 (ko) * 2013-12-27 2020-02-19 삼성전자 주식회사 무선 통신 시스템에서 빔 모드 운용을 위한 방법 장치
US10355761B2 (en) * 2014-10-07 2019-07-16 Mediatek Inc. Beam administration methods for cellular/wireless networks
KR102233630B1 (ko) * 2014-12-19 2021-03-30 한국전자통신연구원 이동통신 네트워크에서의 빔 스위칭 방법 및 장치
CN107005858B (zh) * 2015-02-13 2020-09-29 联发科技（新加坡）私人有限公司 波束追踪以及恢复的方法以及用户设备
CN106804043B (zh) * 2015-11-26 2020-12-15 华为技术有限公司 一种上行接入的方法、用户设备和基站
US10700752B2 (en) * 2016-01-14 2020-06-30 Samsung Electronics Co., Ltd. System, method, and apparatus of beam-tracking and beam feedback operation in a beam-forming based system
US10575338B2 (en) * 2016-02-04 2020-02-25 Samsung Electronics Co., Ltd. Method and apparatus for UE signal transmission in 5G cellular communications
WO2017146550A1 (fr) * 2016-02-26 2017-08-31 Samsung Electronics Co., Ltd. Appareil et procédé d'exécution d'accès aléatoire dans un système à formation de faisceau
US10897717B2 (en) * 2016-02-29 2021-01-19 Mitsubishi Electric Corporation Beam transmission-reception method, base station, terminal, and wireless communication system
EP3264631B1 (fr) * 2016-07-01 2023-08-02 ASUSTek Computer Inc. Procédé et appareil de gestion de la communication lorsqu'un faisceau de service devient invalide dans un système de communication sans fil

Also Published As

Publication number Publication date
US20180367200A1 (en) 2018-12-20
WO2018084775A1 (fr) 2018-05-11
CN109906666A (zh) 2019-06-18
US10848217B2 (en) 2020-11-24
CN109906666B (zh) 2023-05-30
EP3536111A4 (fr) 2019-11-06
EP3536111B1 (fr) 2022-03-23

Similar Documents

Publication Publication Date Title
JP7358520B2 (ja) 無線通信システムにおいてリソースを選択しｐｓｃｃｈを伝送する方法及び装置
US11729833B2 (en) Enhanced random access channel (RACH) procedure
CN110447295B (zh) 执行波束恢复的方法和用户设备以及用于支持其的方法和基站
CN109792783B (zh) 改进的随机接入过程和基于上行链路的移动性
CN114900280B (zh) 用于峰均功率比降低的同步信号传输技术
US11398892B2 (en) Bandwidth part (BWP) hopping for interference mitigation
US10313075B2 (en) Method and apparatus for performing cell on/off operation in wireless communication system
EP3297386B1 (fr) Procédé et dispositif d'exécution d'un processus d'accès aléatoire dans une bande sans licence
RU2663220C1 (ru) Беспроводное устройство, первый сетевой узел и способы в них
CN108462998B (zh) 用于随机接入的基站、用户设备和方法
CN112438072B (zh) 用于随机接入过程的先听后说(lbt)模式
CN116405175A (zh) 共享通信介质上的自主上行链路传输
EP3536075A1 (fr) Résolution de la surdité pendant une évaluation de canal libre (cca) directionnelle
US20110287776A1 (en) Determination of user equipment antenna capability
EP3337275B1 (fr) Procédé et appareil de transmission de données dans une bande sans licence
US10165455B2 (en) Coordination for PBCH
KR20150024333A (ko) 무선 통신 시스템에서 d2d(device-to-device) 통신을 위한 신호 송수신 방법 및 장치
US10383109B2 (en) Method for receiving data in unlicensed band and device using same
EP3536111B1 (fr) Noeud de réseau et dispositif de communication sans fil pour accès aléatoire dans des systèmes basés sur un faisceau
CN115804229A (zh) 动态rach msg1/msga配置
US10848281B2 (en) Coordinated transmission in unlicensed band
CN113056956B (zh) 新无线电-非许可(nr-u)中改进的rach过程
CN114946264A (zh) 网络设备、终端设备及其中的方法
US10506490B2 (en) Method for cell switching in unlicensed band and apparatus using same
WO2022213257A1 (fr) Procédé et appareil de configuration d'une partie de bande passante

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20190319

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

A4 Supplementary search report drawn up and despatched

Effective date: 20191009

RIC1 Information provided on ipc code assigned before grant

Ipc: H04W 74/08 20090101AFI20191003BHEP

Ipc: H04W 16/28 20090101ALN20191003BHEP

Ipc: H04W 56/00 20090101ALI20191003BHEP

Ipc: H04W 28/04 20090101ALN20191003BHEP

17Q First examination report despatched

Effective date: 20191021

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

RIC1 Information provided on ipc code assigned before grant

Ipc: H04W 16/28 20090101ALN20211112BHEP

Ipc: H04W 28/04 20090101ALN20211112BHEP

Ipc: H04W 76/18 20180101ALI20211112BHEP

Ipc: H04W 56/00 20090101ALI20211112BHEP

Ipc: H04W 74/08 20090101AFI20211112BHEP

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

RIC1 Information provided on ipc code assigned before grant

Ipc: H04W 16/28 20090101ALN20211216BHEP

Ipc: H04W 28/04 20090101ALN20211216BHEP

Ipc: H04W 76/18 20180101ALI20211216BHEP

Ipc: H04W 56/00 20090101ALI20211216BHEP

Ipc: H04W 74/08 20090101AFI20211216BHEP

INTG Intention to grant announced

Effective date: 20220104

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602017055049

Country of ref document: DE

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1478319

Country of ref document: AT

Kind code of ref document: T

Effective date: 20220415

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG9D

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20220323

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220323

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220323

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220623

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220323

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220323

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220623

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 1478319

Country of ref document: AT

Kind code of ref document: T

Effective date: 20220323

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220323

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220624

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220323

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220323

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220323

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220323

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220323

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220725

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220323

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220323

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220323

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220323

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220323

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220723

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220323

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602017055049

Country of ref document: DE

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220323

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20221027

Year of fee payment: 6

Ref country code: DE

Payment date: 20221027

Year of fee payment: 6

26N No opposition filed

Effective date: 20230102

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220323

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220323

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20221031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221030

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221031

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220323

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221031

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221030

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20171030

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220323

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220323